August 13, 2014: Get ready for the BREAKUP OF THE YEAR y'all . . . a very reliable insider tells us that rapper Wiz Khalifah is ready to END his longtime relationship/"marriage" with his babys moms Amber Rose. And it's gonna be MESSY!!!

The insider told MediaTakeOut.com that during his tour, Wiz has gotten accustomed to sleeping with GROUPIES - and he's ready to be single again. The snitch told MediaTakeOut.com, "Don't get me wrong, Wiz loves her and she's a cool [girl]. But he needs to be single right now."

So why is it MESSY??? Well the insider told us that Amber has been PRETTY OPEN WITH WIZ during their many arguments - that if he leaves, she's getting the most VICIOUS LAWYER IN THE WORLD - and is gonna hit him for the MAXIMUM CHILD SUPPORT that she can get.